I am on German version/keyboard of Pre and I am not sure this applies also to other versions. But what I find really annoying is that when you have double-pressed the option (orange) key, the backspace key does not produce backspace. It does nuthin. So if you mistype a number or symbol, to take it back, you need to <option>+<backspace>+<option>+[<option>+]<correct number>. Instead, it should just work as a backspace, leaving the number/symbel mode on.